Mobile EV SOH Fault Repair London | FixAnyEV

⚡ EV State of Health (SOH) Fault Repair in London

Fast, Mobile SOH Diagnostics for All EV Makes & Models

State of Health (SOH) is one of the most important indicators of your EV’s battery condition. It reflects the battery’s true capacity, internal resistance and long‑term degradation. When SOH readings become inaccurate or drop suddenly, the EV may lose range, charge slowly, enter reduced‑power mode or display BMS warnings. FixAnyEV provides fast, expert mobile diagnostics anywhere in London to identify and repair SOH‑related faults safely.

📞 Call 07779 836 677 for immediate assistance.

⚠️ Incorrect SOH readings can hide serious battery issues. ⚠️ Stop driving immediately if your EV shows BMS or battery degradation warnings. ⚠️ Never attempt to reset SOH without proper diagnostics.

Common SOH Faults We Repair

Sudden SOH Drop

  • Battery SOH drops by 10–30% overnight
  • Range suddenly reduced
  • Charging limits applied
  • BMS warnings

⚠️ A sudden SOH drop often indicates a sensor or BMS fault, not real degradation.

Incorrect SOH Calculation

  • SOH stuck at one value
  • SOH reading too high or too low
  • Range estimate inaccurate
  • Charging behaviour inconsistent

Faulty Current Sensor (Shunt / Hall Sensor)

  • Incorrect charge/discharge readings
  • BMS unable to calculate SOH
  • Charging refusal

Cell Imbalance Affecting SOH

  • One or more cells out of voltage range
  • BMS limiting usable capacity
  • Reduced performance

Temperature Sensor Errors Affecting SOH

  • Incorrect temperature readings
  • Thermal limits applied
  • SOH fluctuates unexpectedly

BMS Software or Communication Faults

  • CAN bus errors
  • Missing data from CMUs
  • “Service EV System” warnings

Our SOH Diagnostic Process

  1. Full EV‑compatible scan – read BMS data, SOH values and fault codes
  2. Cell‑level analysis – voltage, temperature and resistance checks
  3. Current sensor testing – verify charge/discharge accuracy
  4. SOH drift and recalculation assessment
  5. On‑site repair or safe workaround – restore accurate SOH reporting

⚠️ Driving with incorrect SOH can permanently damage the HV battery.

Why EV Drivers Choose FixAnyEV

  • Mobile EV specialist covering all of London
  • High‑voltage certified technician
  • Advanced diagnostic tools for all EV brands
  • Faster and more convenient than a dealership
  • Clear, upfront pricing
  • Trusted across London, Surrey, Sussex and Kent

📞 Book now: 07779 836 677

Areas We Cover in London

We cover all London boroughs, including:

  • Croydon, Bromley, Lewisham
  • Camden, Islington, Hackney
  • Ealing, Brent, Hillingdon
  • Kingston, Richmond, Sutton
  • Central, North, South, East and West London

Book Your EV SOH Fault Repair

If your EV shows SOH errors, reduced range or sudden battery degradation, FixAnyEV brings expert diagnostics and repair directly to you.

⚠️ SOH faults are safety‑critical — do not delay diagnosis. ⚠️ Stop driving immediately if the EV shuts down or limits power.

📞 Call 07779 836 677 to book your mobile EV repair.